Night Optics Falcon 6x Gen 3 Gated Long-Range Night Vision Binocular - Manual (Page 18)

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INFINITY FOCUS. Adjustment of the objective lens so that a
distant object, such as a star or the point light on a distant tower,
forms the sharpest image.
INTERMITTENT OPERATION. This is a defect in the image area
of the NVG. See “flashing”.
IR SOURCE. This is an IR Light Emitting Diode (LED). When
turned on, the IR source provides additional illumination to
enhance existing light conditions. Used only for performing nearby
tasks.
LIF. This is a light protection filter for the objective lens. Use of
this filter will result in a slight reduction in system gain.
MICROCHANNEL PLATE. A current-multiplying optical disk that
intensifies the electron image produced by the photocathode.
NOTE. Essential information of special importance, interest, or
aid in job performance.
PHOTOCATHODE. The input of an image intensifier that absorbs
light energy and in turn releases electrical energy in the form of an
electron image.
SCINTILLATION. A faint, random, sparkling effect throughout the
image area. Scintillation is a normal characteristic of the image
intensifier and should not be confused with emission points.
Scintillation is more pronounced under low light conditions. Also
called “video noise”.
SHADING. The viewed image should be a full circle. If shading is
present, you will not see a fully circular image. Shading is
indicative of a dying photocathode and is caused by a defective
vacuum seal of the image intensifier. Shading is very dark and you
cannot see an image through it.
WARNING. Conditions, practices, or procedures that must be
observed to avoid personal injury or loss of life.